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Gentoo: nbSMTP Format string vulnerability Print E-mail
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Posted by Benjamin D. Thomas   
Gentoo nbSMTP is vulnerable to a format string vulnerability which may result in remote execution of arbitrary code.
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Gentoo Linux Security Advisory                           GLSA 200508-03
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: nbSMTP: Format string vulnerability
      Date: August 02, 2005
      Bugs: #100274
        ID: 200508-03

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Synopsis
========

nbSMTP is vulnerable to a format string vulnerability which may result
in remote execution of arbitrary code.

Background
==========

nbSMTP is an SMTP client suitable to run in chroot jails, in embedded
systems, laptops and workstations.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  mail-mta/nbsmtp       < 1.00                              >= 1.00

Description
===========

Niels Heinen discovered a format string vulnerability.

Impact
======

An attacker can setup a malicious SMTP server and exploit this
vulnerability to execute arbitrary code with the permissions of the
user running nbSMTP.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All nbSMTP users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-mta/nbsmtp-1.0"

References
==========

  [ 1 ] nbSMTP official site
        http://nbsmtp.ferdyx.org/

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200508-03.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0
 
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